The invention relates to a preparation method for a web hole forming and pouring type partial combination prefabricated member. The preparation method comprises the following technology steps that (1), holes are formed in the center of a web of the member at equal intervals in the length direction of the H-shaped steel member; (2), the H-shaped steel member is flat placed on a bench formwork, and edge formworks are erected at the two ends of the H-shaped steel member; and (3), concrete are poured above the upward face of the web. According to the preparation method for the web hole forming and pouring type partial combination prefabricated member, one-time pouring and one-time curing can be achieved, so that the period of preparing the member is reduced.